Ejector mechanism for small arms of the drop-down-barrel type



Marcbl7, 1925. i 1,530,041

J. W.:. FEARN EJE'CTOR MECHANISM FOR SMALL ARMS OF THE DROP DOWN BARRELTYPE Filed March 2a. 1923 housed in the barrel lump, and is,

Patented li/lar. 17, 1925.

hi i T D;

JOHN WILLIAM FEARN',

OF BIBlVIINGHAM, ENGLAND DOUGLAS VAUGHN JOHNSTONE, Ol BIRJHINGHAM,ENGLAND.

Application filed March 28, 1923. EsBI'lZtINO. 628,305

To aZZ whom it may concern:

Be it known that JOHN VILLIAM FEARN, a subject of the King of GreatBritain, residing at 81 Weaman Street, Birmingham, England, has inventedcertain new and useful Improvements in Ejector Mechanism 'for Small Armsof the Drop-Down-Barrel Type, of which the following is a specification.7

This invention consists in a new or improved ejector-mechanism for smallarms of the drop-down barrel type, which is principally applicable tosingle-barrel guns, and comprisesan ejector-retaining sear which 1sduring the closing of the arm, lifted into engagement with the ejectorslide by an abutment located on the body body joint-pin, whereas of thesaid arm, the sea is retracted from the slide by a loose sector that isdisposed in front of the barrel lump so as to ride upon 1 the joint-pin,and obtains its sear retracting motion from another body-abutmentlocated above the joint-pin centre.

Figure 1 is a sectional view of a single gun fitted with the improvedejector and showing the parts they assume when the gun is closed.

Figure 2 is a similar view, but shows the gun opened and the ejectorparts in the positions operated to eject a spent cartridge from thechamber of the barrel. I

Figure 3 shows the main parts of the ejector mechanism separately; alsoan elevation of the barrel lump wherein the said parts are housed. I

The same reference numerals indicate corresponding parts in the saidfigures.

In the improved ejector mechanism as illustrated, the ejector-leg 12 islocated in a hole 12 bored longitudinally from the rear of thebarrel-lump 1e and is influenced by an ejector spring 16 disposedbetween the blind end of the said hole and a collar on the leg; one sideof the said leg being formed with a clearance 17 of suitable length(determined by the working throw of the ejector) to afford an engagementfor a transverse stop-pin 18, whilst at a suitable distance from theinner end of the said leg, a shoulder 19 is machined to constitute thebent or engagement for the sear 10: the rear underside of the saidshoulder being preferbelow the centre of the during the openingv thereofin the positions they assume after the same have ably bevelled as shownfor the purpose hereinafter explained. Y

The sear, which is located in, a'hole' 10 ism-n drilled diagonallyupwards from the forward end of the lump l l'into the ejector leghousing 12, consists of avslidablepin whose upper end is. suitablyshaped'for en-- gaging the back of the ejector-bent 19 whilst near itsother end,"the said pin is formed with a shoulder 10? to constitute anengagement for thesear-retracting piece 13,;

and with a clearance for the stop-pin 10.

The retractor piece 13 consists ofa loose sector that is housed in acurved recess 13 in the front of the barrel-lump and is adapted to ridearound the rear side of the body joint pin 15 on'the gun being opened orclosed; its upper end 13 an abutment15l located on the action body aboveand forward ofthe centre of the joint shoulder10 of the sear-pin.

, The retractor is of such dimension that when the gun is closed, theupper end 13 cause the body-abutmentf 15 to impinge against theprojecting end of the .retractor and seating 13 this movement beingtransmitted'to the sear-pin 10 for disengaging the latter from the bentshoulder 19 and.

allowing theejector-slide to be projected by its'spring. On the otherhand, during the closing of the gun, the ejector slide is pushed forwardby its head moving down the breech-face of the body, and as soon as theslide has been thus displaced as to take the bent-shoulder beyond thesear-pin housing, the forward end of the sear-pin comes into contactwith an abutment 15 located on the body below the j oint-pin centre. Thecontinuance of the relative movement of the barrel and body in theOlOSillgdiIGCtlOIl then effects an upward displacement of the searpinwithin its housing, which simultaneously re-engages the said sear pinwith the bent shoulder of the extractor leg and also displaces theretractor 13: counter-clockwise in its seating, causing its upper end toagain being opposedto displace the latter clockwise within its' .75 fpin 15*,whilst its lower-end 13 bears on the i j is "closed, whichresults 1 the .body moves through an combination "of a v slide mountedwithin said lump,

retaining sear mounte'd'withinthe said bar rel lump, an abutment locatedon the body In order to delay the disengagement of the sear pinfrom theejector slide until the breech has been opened suflicientlyto-give thenecessary-ejection clearance, thexbent shoulder may be formed, (asshowninthe drawing) so thatthe said sear-pin has to be proportionedanddisposed sothat a certain clearance exists between them when the gunthat, onzopening,

appreciable distance relativelyjto the barrel before contactismadelbetween'the said abutment and the retractor, andthe disengagementof ,the j j mg sear-out of engagement witlrthe' e ector sear pin iscorrespondingly delayed.

Having described-my invention what I" claim and desire toisecure byLetters Patent 1s:

l. In an ejector mechanism 3 for small arms of 'the' drop-down gbarreltype," the of the arm'beloW the center ofthe bodyjoint pin and duringthe closing of the arm, a loosefre tractor piece fdisposed inthe frontIofthe-j qbarrel lump-so as to freely ride around the joint pin, andaanabutment located on the' body of the arm above the center of the jointtion of a barrel lump; .-an;ejector. slide mounted ithin said Jump; an'ejector-rebarrel lump, an ejector f an ejectoradapted to engage theinner end of the ejector retaining sear for liftingthe samemtoengagement with the ejector slide I taini'ng sear mounted'withinthe-said barrel lump and having a'shoulderat its lower inner-end; anabutment located on the body of-the arm below the center of the bodybody ioint 'pin, the lower-end of said loose retractor piece"beingadapted to engage the shoulder on: the said :ej-ectonretainingsear and an "abutment-located onthe body of the arrn fabovethe center ofthe body joint pin andengaging. the uppenend of the loose retractorpiece for moving the ejectoreretain- I slide during the-opening of thearm.

i 3. In" an ejector "mechanism-for small arms "of the; drop-downbarrel-type, the combination "of a-barrel lump; 'a nd-:ejector slidemounted 'with'in the 'sa'idbarrel' lump;

and: ejector=retaining .sear "mounted Within the "said lump. "andnormally engaging the ejector slide-t0- maintain the samer-inmonejecting position during the ftime 'that the arm is "in closed position;a *lo'ose*-segmental aret-ractor' piece dispose-din the front of.the'barrel lump andadapted to move around the body joint pin,*ithe lower*end of said-retractor ypiece engaging the; said ejector retaining sear;located on the body of the: arm above thecenter of the j oint [pinandengaginggthe upper end of the saidloosasegmentalretractor piece, formoving the same about the body-joint pinto disengage theejectorretaining seanfrom the ejector slide during the opening of thearm.

- "In testimony Whereof I hereunto a'fiix my- 1 signature.

vJoHN WILLIAM FEARN.

and" 'anabutment

